US 9,521,263 B2 · Long term monitoring of transmission and voice activity patterns for regulating gain control

Abstract

The present document relates to audio communication systems. In particular, the present document relates to the control of the level of audio signals within audio communication systems. A method for leveling a near-end audio signal (211) using a leveling gain (214) is described. The near-end audio signal (211) comprises a sequence of segments, wherein the sequence of segments comprises a current segment and one or more preceding segments. The method comprises determining a nuisance measure (416) which is indicative of an amount of aberrant voice activity within the sequence of segments of the near-end audio signal (211); and determining the leveling gain (214) for the current segment of the near-end audio signal (211), at least based on the leveling gain (214) for the one or more preceding segments of the near-end audio signal (211), and by taking into account—according to a variable degree—an estimate of the level of the current segment of the near-end audio signal (211); wherein the variable degree is dependent on the nuisance measure (416).

Claims23

Dependent claims

A method for leveling an audio signal using a leveling gain, the method comprising:

updating the leveling gain for a current segment of the audio signal based on a target level;
wherein the audio signal comprises a sequence of segments that include the current segment;
applying the leveling gain to the current segment of the audio signal;
and
repeating the updating and applying for the sequence of segments of the audio signal;
wherein the updating of the leveling gain is suspended, subject to determining a pre-determined number of aberrant voice bursts within the audio signal.

3 more elements

A computing device for leveling an audio signal using a leveling gain, the computing device comprising one or more computing processors configured to perform:

updating the leveling gain for a current segment of the audio signal based on a target level;
wherein the audio signal comprises a sequence of segments that include the current segment;
applying the leveling gain to the current segment of the audio signal;
and
repeating the updating and applying for the sequence of segments of the audio signal;
wherein the updating of the leveling gain is suspended, subject to determining a pre-determined number of aberrant voice bursts within the audio signal.

3 more elements

One or more non-transitory computer-readable media storing a sequence of instructions for leveling an audio signal using a leveling gain, which sequence of instructions, when executed by one or more computing processors, causes the one or more computing processors to perform:

updating the leveling gain for a current segment of the audio signal based on a target level;
wherein the audio signal comprises a sequence of segments that include the current segment;
applying the leveling gain to the current segment of the audio signal;
and
repeating the updating and applying for the sequence of segments of the audio signal;
wherein the updating of the leveling gain is suspended, subject to determining a pre-determined number of aberrant voice bursts within the audio signal.

3 more elements

Dependencies are inferred from the claim text.

Long term monitoring of transmission and voice activity patterns for regulating gain control

Life of this patent

Long term monitoring of transmission and voice activity patterns for regulating gain control

Life of this patent

Abstract

Claims23